./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:36:27,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:36:27,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:36:27,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:36:27,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:36:27,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:36:27,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:36:27,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:36:27,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:36:27,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:36:27,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:36:27,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:36:27,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:36:27,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:36:27,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:36:27,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:36:27,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:36:27,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:36:27,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:36:27,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:36:27,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:36:27,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:36:27,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:36:27,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:36:27,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:36:27,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:36:27,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:36:27,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:36:27,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:36:27,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:36:27,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:36:27,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:36:27,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:36:27,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:36:27,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:36:27,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:36:27,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:36:27,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:36:27,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:36:27,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:36:27,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:36:27,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:36:27,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:36:27,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:36:27,719 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:36:27,719 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:36:27,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:36:27,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:36:27,720 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:36:27,720 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:36:27,720 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:36:27,720 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:36:27,721 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:36:27,721 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:36:27,721 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:36:27,721 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:36:27,721 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:36:27,722 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:36:27,722 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:36:27,722 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:36:27,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:36:27,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:36:27,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:36:27,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:36:27,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:36:27,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:36:27,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:36:27,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:36:27,724 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:36:27,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:36:27,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:36:27,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:36:27,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:36:27,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:36:27,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:36:27,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:36:27,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:36:27,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:36:27,726 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:36:27,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:36:27,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:36:27,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:36:27,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:36:27,727 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a [2021-11-23 02:36:27,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:36:28,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:36:28,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:36:28,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:36:28,010 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:36:28,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-11-23 02:36:28,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/data/8fe66d420/e661ac0f11d145e0949747869a5417ee/FLAG1fa5ac9b8 [2021-11-23 02:36:28,551 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:36:28,551 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-11-23 02:36:28,562 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/data/8fe66d420/e661ac0f11d145e0949747869a5417ee/FLAG1fa5ac9b8 [2021-11-23 02:36:28,918 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/data/8fe66d420/e661ac0f11d145e0949747869a5417ee [2021-11-23 02:36:28,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:36:28,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:36:28,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:36:28,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:36:28,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:36:28,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:28" (1/1) ... [2021-11-23 02:36:28,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@754f0ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:28, skipping insertion in model container [2021-11-23 02:36:28,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:28" (1/1) ... [2021-11-23 02:36:28,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:36:28,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:36:29,144 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2021-11-23 02:36:29,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:36:29,189 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:36:29,202 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2021-11-23 02:36:29,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:36:29,223 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:36:29,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:29 WrapperNode [2021-11-23 02:36:29,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:36:29,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:36:29,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:36:29,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:36:29,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:29" (1/1) ... [2021-11-23 02:36:29,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:29" (1/1) ... [2021-11-23 02:36:29,261 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2021-11-23 02:36:29,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:36:29,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:36:29,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:36:29,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:36:29,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:29" (1/1) ... [2021-11-23 02:36:29,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:29" (1/1) ... [2021-11-23 02:36:29,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:29" (1/1) ... [2021-11-23 02:36:29,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:29" (1/1) ... [2021-11-23 02:36:29,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:29" (1/1) ... [2021-11-23 02:36:29,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:29" (1/1) ... [2021-11-23 02:36:29,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:29" (1/1) ... [2021-11-23 02:36:29,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:36:29,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:36:29,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:36:29,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:36:29,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:29" (1/1) ... [2021-11-23 02:36:29,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:36:29,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:36:29,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:36:29,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:36:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:36:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:36:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:36:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:36:29,490 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:36:29,492 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:36:29,619 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:36:29,650 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:36:29,650 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:36:29,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:29 BoogieIcfgContainer [2021-11-23 02:36:29,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:36:29,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:36:29,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:36:29,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:36:29,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:36:28" (1/3) ... [2021-11-23 02:36:29,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711f0155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:29, skipping insertion in model container [2021-11-23 02:36:29,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:29" (2/3) ... [2021-11-23 02:36:29,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711f0155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:29, skipping insertion in model container [2021-11-23 02:36:29,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:29" (3/3) ... [2021-11-23 02:36:29,661 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c [2021-11-23 02:36:29,666 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:36:29,666 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:36:29,716 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:36:29,724 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:36:29,724 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:36:29,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:36:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 02:36:29,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:29,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 02:36:29,757 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:29,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:29,777 INFO L85 PathProgramCache]: Analyzing trace with hash 81332474, now seen corresponding path program 1 times [2021-11-23 02:36:29,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:29,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845839434] [2021-11-23 02:36:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:29,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:36:29,914 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:36:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:36:29,992 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:36:29,994 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:36:29,997 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:36:29,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:36:30,005 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 02:36:30,008 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:36:30,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:36:30 BoogieIcfgContainer [2021-11-23 02:36:30,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:36:30,044 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:36:30,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:36:30,044 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:36:30,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:29" (3/4) ... [2021-11-23 02:36:30,049 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:36:30,049 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:36:30,051 INFO L158 Benchmark]: Toolchain (without parser) took 1126.74ms. Allocated memory is still 104.9MB. Free memory was 70.5MB in the beginning and 53.5MB in the end (delta: 17.0MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2021-11-23 02:36:30,053 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 73.4MB. Free memory was 46.7MB in the beginning and 46.7MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:36:30,054 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.06ms. Allocated memory is still 104.9MB. Free memory was 70.3MB in the beginning and 80.8MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:36:30,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.29ms. Allocated memory is still 104.9MB. Free memory was 80.8MB in the beginning and 79.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:36:30,056 INFO L158 Benchmark]: Boogie Preprocessor took 31.39ms. Allocated memory is still 104.9MB. Free memory was 79.1MB in the beginning and 77.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:36:30,061 INFO L158 Benchmark]: RCFGBuilder took 358.09ms. Allocated memory is still 104.9MB. Free memory was 77.9MB in the beginning and 67.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:36:30,062 INFO L158 Benchmark]: TraceAbstraction took 385.12ms. Allocated memory is still 104.9MB. Free memory was 67.2MB in the beginning and 54.2MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:36:30,064 INFO L158 Benchmark]: Witness Printer took 5.64ms. Allocated memory is still 104.9MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:36:30,072 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 73.4MB. Free memory was 46.7MB in the beginning and 46.7MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.06ms. Allocated memory is still 104.9MB. Free memory was 70.3MB in the beginning and 80.8MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.29ms. Allocated memory is still 104.9MB. Free memory was 80.8MB in the beginning and 79.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.39ms. Allocated memory is still 104.9MB. Free memory was 79.1MB in the beginning and 77.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 358.09ms. Allocated memory is still 104.9MB. Free memory was 77.9MB in the beginning and 67.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 385.12ms. Allocated memory is still 104.9MB. Free memory was 67.2MB in the beginning and 54.2MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.64ms. Allocated memory is still 104.9MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 55. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, r; [L51] d = 1. VAL [_EPS=1/1000000, d=1] [L51] COND TRUE d <= 20. [L53] CALL, EXPR SqrtR(d) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND FALSE !(Input <= 1.0) [L28] xn = 1.0/Input [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [\old(Input)=1, _EPS=1/1000000, cond=0, i=0, Input=1, xn=1, xn=1] [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L53] RET, EXPR SqrtR(d) [L53] r = SqrtR(d) [L55] CALL __VERIFIER_assert(r >= 1.0 && r <= 5.0) [L20] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L20] reach_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 02:36:30,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:36:32,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:36:32,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:36:32,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:36:32,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:36:32,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:36:32,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:36:32,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:36:32,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:36:32,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:36:32,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:36:32,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:36:32,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:36:32,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:36:32,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:36:32,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:36:32,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:36:32,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:36:32,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:36:32,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:36:32,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:36:32,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:36:32,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:36:32,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:36:32,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:36:32,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:36:32,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:36:32,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:36:32,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:36:32,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:36:32,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:36:32,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:36:32,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:36:32,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:36:32,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:36:32,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:36:32,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:36:32,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:36:32,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:36:32,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:36:32,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:36:32,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 02:36:32,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:36:32,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:36:32,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:36:32,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:36:32,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:36:32,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:36:32,843 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:36:32,843 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:36:32,844 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:36:32,844 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:36:32,845 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:36:32,845 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:36:32,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:36:32,847 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:36:32,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:36:32,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:36:32,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:36:32,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:36:32,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:36:32,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:36:32,849 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:36:32,849 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:36:32,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:36:32,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:36:32,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:36:32,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:36:32,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:36:32,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:36:32,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:36:32,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:36:32,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:36:32,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:36:32,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:36:32,854 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:36:32,854 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:36:32,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:36:32,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:36:32,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:36:32,855 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a [2021-11-23 02:36:33,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:36:33,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:36:33,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:36:33,321 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:36:33,322 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:36:33,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-11-23 02:36:33,423 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/data/9ea9bd8f1/086bb4e9be37474e9d287f77909e6065/FLAG6e53b7d2f [2021-11-23 02:36:33,994 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:36:33,995 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-11-23 02:36:34,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/data/9ea9bd8f1/086bb4e9be37474e9d287f77909e6065/FLAG6e53b7d2f [2021-11-23 02:36:34,392 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/data/9ea9bd8f1/086bb4e9be37474e9d287f77909e6065 [2021-11-23 02:36:34,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:36:34,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:36:34,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:36:34,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:36:34,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:36:34,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:34" (1/1) ... [2021-11-23 02:36:34,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c393380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:34, skipping insertion in model container [2021-11-23 02:36:34,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:34" (1/1) ... [2021-11-23 02:36:34,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:36:34,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:36:34,700 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2021-11-23 02:36:34,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:36:34,763 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:36:34,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2021-11-23 02:36:34,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:36:34,831 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:36:34,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:34 WrapperNode [2021-11-23 02:36:34,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:36:34,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:36:34,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:36:34,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:36:34,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:34" (1/1) ... [2021-11-23 02:36:34,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:34" (1/1) ... [2021-11-23 02:36:34,885 INFO L137 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2021-11-23 02:36:34,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:36:34,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:36:34,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:36:34,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:36:34,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:34" (1/1) ... [2021-11-23 02:36:34,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:34" (1/1) ... [2021-11-23 02:36:34,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:34" (1/1) ... [2021-11-23 02:36:34,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:34" (1/1) ... [2021-11-23 02:36:34,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:34" (1/1) ... [2021-11-23 02:36:34,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:34" (1/1) ... [2021-11-23 02:36:34,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:34" (1/1) ... [2021-11-23 02:36:34,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:36:34,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:36:34,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:36:34,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:36:34,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:34" (1/1) ... [2021-11-23 02:36:34,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:36:34,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:36:34,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:36:34,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:36:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:36:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:36:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:36:35,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:36:35,090 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:36:35,091 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:36:44,126 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:36:44,131 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:36:44,131 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:36:44,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:44 BoogieIcfgContainer [2021-11-23 02:36:44,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:36:44,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:36:44,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:36:44,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:36:44,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:36:34" (1/3) ... [2021-11-23 02:36:44,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7925c498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:44, skipping insertion in model container [2021-11-23 02:36:44,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:34" (2/3) ... [2021-11-23 02:36:44,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7925c498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:44, skipping insertion in model container [2021-11-23 02:36:44,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:44" (3/3) ... [2021-11-23 02:36:44,143 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c [2021-11-23 02:36:44,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:36:44,149 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:36:44,213 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:36:44,220 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:36:44,221 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:36:44,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:36:44,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:36:44,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:44,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:44,251 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:44,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:44,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1706227183, now seen corresponding path program 1 times [2021-11-23 02:36:44,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:36:44,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491591566] [2021-11-23 02:36:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:44,277 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:36:44,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:36:44,281 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:36:44,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:36:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:45,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 02:36:45,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:36:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:36:46,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:36:57,500 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_5| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|)) |v_ULTIMATE.start_SqrtR_~linf~0#1_5|))) is different from false [2021-11-23 02:36:59,584 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_5| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|)) |v_ULTIMATE.start_SqrtR_~linf~0#1_5|))) is different from true [2021-11-23 02:37:05,524 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_5| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse2 .cse2))) |v_ULTIMATE.start_SqrtR_~linf~0#1_5|))) is different from false [2021-11-23 02:37:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:37:16,572 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:37:16,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491591566] [2021-11-23 02:37:16,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491591566] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:16,573 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:37:16,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 02:37:16,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458777181] [2021-11-23 02:37:16,577 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:16,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:37:16,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:37:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:37:16,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=20, Unknown=3, NotChecked=18, Total=56 [2021-11-23 02:37:16,634 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:37:18,717 WARN L860 $PredicateComparison]: unable to prove that (and (or (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_5| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse2 .cse2))) |v_ULTIMATE.start_SqrtR_~linf~0#1_5|))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 02:37:20,820 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_SqrtR_~xn~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_5| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|)) |v_ULTIMATE.start_SqrtR_~linf~0#1_5|))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 02:37:23,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:27,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:27,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:27,531 INFO L93 Difference]: Finished difference Result 36 states and 51 transitions. [2021-11-23 02:37:27,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:37:27,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 02:37:27,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:27,555 INFO L225 Difference]: With dead ends: 36 [2021-11-23 02:37:27,555 INFO L226 Difference]: Without dead ends: 17 [2021-11-23 02:37:27,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=5, NotChecked=44, Total=90 [2021-11-23 02:37:27,563 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:27,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 2 Unknown, 21 Unchecked, 6.7s Time] [2021-11-23 02:37:27,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-23 02:37:27,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-23 02:37:27,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:37:27,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-23 02:37:27,600 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2021-11-23 02:37:27,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:27,600 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-23 02:37:27,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:37:27,601 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-23 02:37:27,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:37:27,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:27,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:37:27,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:37:27,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:37:27,822 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:27,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash 68780179, now seen corresponding path program 1 times [2021-11-23 02:37:27,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:37:27,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886403652] [2021-11-23 02:37:27,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:27,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:37:27,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:37:27,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:37:27,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:37:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:30,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:37:30,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:37:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:37:30,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:37:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:37:31,091 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:37:31,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886403652] [2021-11-23 02:37:31,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886403652] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:31,092 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:37:31,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:37:31,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564716334] [2021-11-23 02:37:31,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:31,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:37:31,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:37:31,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:37:31,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:37:31,095 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:37:33,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:36,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:38,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:40,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:42,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:45,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:47,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:49,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:51,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:55,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:57,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:59,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:01,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:01,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:38:01,238 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-11-23 02:38:01,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:38:01,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 02:38:01,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:38:01,457 INFO L225 Difference]: With dead ends: 29 [2021-11-23 02:38:01,458 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 02:38:01,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:38:01,460 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:38:01,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 13 Unknown, 0 Unchecked, 30.0s Time] [2021-11-23 02:38:01,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 02:38:01,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-11-23 02:38:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:38:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-23 02:38:01,468 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2021-11-23 02:38:01,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:38:01,469 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-23 02:38:01,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:38:01,470 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-11-23 02:38:01,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:38:01,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:01,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:38:01,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-23 02:38:01,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:38:01,677 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:38:01,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:01,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1301780435, now seen corresponding path program 1 times [2021-11-23 02:38:01,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:38:01,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856278852] [2021-11-23 02:38:01,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:01,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:38:01,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:38:01,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:38:01,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:38:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:06,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:38:06,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:38:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:38:10,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:38:16,511 WARN L227 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:38:23,734 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2021-11-23 02:38:25,970 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2021-11-23 02:38:41,673 WARN L227 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 26 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:38:47,443 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 28 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:38:49,935 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2021-11-23 02:38:52,445 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2021-11-23 02:38:58,391 WARN L227 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 26 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:39:04,181 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 28 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:39:09,479 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 25 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:39:14,815 WARN L227 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 27 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:39:17,149 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2021-11-23 02:39:19,485 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2021-11-23 02:39:24,852 WARN L227 SmtUtils]: Spent 5.36s on a formula simplification that was a NOOP. DAG size: 25 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:39:30,128 WARN L227 SmtUtils]: Spent 5.27s on a formula simplification that was a NOOP. DAG size: 27 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:39:32,467 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2021-11-23 02:39:34,785 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2021-11-23 02:39:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 02:39:34,821 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:39:34,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856278852] [2021-11-23 02:39:34,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856278852] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:39:34,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1388389245] [2021-11-23 02:39:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:34,821 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:39:34,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:39:34,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:39:34,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-23 02:39:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:39:42,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 02:39:42,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:39:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:39:45,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:40:11,810 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (_ bv0 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))))) is different from false [2021-11-23 02:40:14,005 WARN L860 $PredicateComparison]: unable to prove that (or (not (= (_ bv0 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))))) is different from true [2021-11-23 02:40:19,847 WARN L227 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 26 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:40:25,710 WARN L227 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 28 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:40:35,366 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 26 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:40:41,175 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 28 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:40:46,374 WARN L227 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 25 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:40:51,568 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 27 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:40:56,859 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 25 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:41:02,170 WARN L227 SmtUtils]: Spent 5.31s on a formula simplification that was a NOOP. DAG size: 27 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:41:02,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 02:41:02,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1388389245] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:41:02,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061722893] [2021-11-23 02:41:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:02,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:02,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:02,201 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:02,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:43:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:50,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 02:43:50,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:52,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:22,046 WARN L227 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 26 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:44:27,736 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 28 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:44:37,263 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:44:39,774 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) (= (_ bv0 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)) is different from false [2021-11-23 02:44:42,262 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) (= (_ bv0 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)) is different from true [2021-11-23 02:44:51,774 WARN L227 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 26 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:44:57,510 WARN L227 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 28 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:45:02,698 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 25 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:45:07,930 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 27 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:45:13,219 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 25 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:45:18,424 WARN L227 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 27 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:45:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 02:45:18,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061722893] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:45:18,463 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:45:18,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 9, 10, 10] total 19 [2021-11-23 02:45:18,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348430898] [2021-11-23 02:45:18,463 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:45:18,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 02:45:18,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:45:18,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 02:45:18,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=119, Unknown=13, NotChecked=162, Total=342 [2021-11-23 02:45:18,465 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:45:20,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:23,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:25,677 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (= .cse1 |c_ULTIMATE.start_main_~d~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2021-11-23 02:45:27,996 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (= .cse1 |c_ULTIMATE.start_main_~d~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2021-11-23 02:45:30,316 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (= .cse1 |c_ULTIMATE.start_SqrtR_~Input#1|) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-11-23 02:45:32,659 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (= .cse1 |c_ULTIMATE.start_SqrtR_~Input#1|) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-23 02:45:35,149 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (= |c_ULTIMATE.start_SqrtR_~xn~0#1| .cse1) (= .cse1 |c_ULTIMATE.start_SqrtR_~Input#1|) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-11-23 02:45:37,637 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (= |c_ULTIMATE.start_SqrtR_~xn~0#1| .cse1) (= .cse1 |c_ULTIMATE.start_SqrtR_~Input#1|) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-23 02:45:40,092 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse4 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (let ((.cse0 (fp.geq .cse4 .cse1)) (.cse2 (fp.leq .cse4 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (.cse3 (= (_ bv0 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|))) (and .cse0 (= |c_ULTIMATE.start_SqrtR_~xn~0#1| .cse1) (or (and .cse0 .cse2) .cse3) (= .cse1 |c_ULTIMATE.start_SqrtR_~Input#1|) .cse2 (or .cse3 (= (_ bv1 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from false [2021-11-23 02:45:42,588 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse4 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (let ((.cse0 (fp.geq .cse4 .cse1)) (.cse2 (fp.leq .cse4 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (.cse3 (= (_ bv0 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|))) (and .cse0 (= |c_ULTIMATE.start_SqrtR_~xn~0#1| .cse1) (or (and .cse0 .cse2) .cse3) (= .cse1 |c_ULTIMATE.start_SqrtR_~Input#1|) .cse2 (or .cse3 (= (_ bv1 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2021-11-23 02:45:45,897 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse4 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (let ((.cse0 (fp.geq .cse4 .cse1)) (.cse2 (fp.leq .cse4 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (.cse3 (= (_ bv0 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|))) (and .cse0 (= (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) .cse1) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)) |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) .cse2 (or (not .cse3) (and .cse0 .cse2)) (or .cse3 (= (_ bv1 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2021-11-23 02:45:49,995 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (= (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) .cse1) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)) |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-23 02:45:53,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:55,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:58,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:01,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:01,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:01,258 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-11-23 02:46:01,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 02:46:01,259 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 02:46:01,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:01,260 INFO L225 Difference]: With dead ends: 29 [2021-11-23 02:46:01,261 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 02:46:01,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 62.3s TimeCoverageRelationStatistics Valid=73, Invalid=162, Unknown=23, NotChecked=444, Total=702 [2021-11-23 02:46:01,262 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:01,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 6 Unknown, 66 Unchecked, 15.6s Time] [2021-11-23 02:46:01,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 02:46:01,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2021-11-23 02:46:01,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:46:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-11-23 02:46:01,269 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 11 [2021-11-23 02:46:01,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:01,269 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-11-23 02:46:01,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:46:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-11-23 02:46:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:46:01,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:01,271 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:01,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:46:01,685 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2021-11-23 02:46:01,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2021-11-23 02:46:01,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:46:01,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 02:46:01,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:46:01,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:01,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1648833135, now seen corresponding path program 2 times [2021-11-23 02:46:01,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:46:01,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880831961] [2021-11-23 02:46:01,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:46:01,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:46:01,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:46:01,925 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:46:01,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 02:46:06,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:46:06,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:46:07,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 02:46:07,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:46:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:09,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:46:14,471 WARN L227 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 31 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:46:19,642 WARN L227 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 32 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:46:22,008 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1)))))) is different from false [2021-11-23 02:46:24,374 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1)))))) is different from true [2021-11-23 02:46:29,545 WARN L227 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 31 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:46:34,693 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 32 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:46:46,170 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse3) .cse3) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse3) .cse3))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 .cse3))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.gt .cse0 .cse1)))))) is different from false [2021-11-23 02:46:48,367 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse3) .cse3) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse3) .cse3))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 .cse3))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.gt .cse0 .cse1)))))) is different from true [2021-11-23 02:46:59,816 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse3) .cse3) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse3) .cse3))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 .cse3))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1))))))) is different from false [2021-11-23 02:47:02,026 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse3) .cse3) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse3) .cse3))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 .cse3))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1))))))) is different from true [2021-11-23 02:47:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 02:47:04,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:47:04,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880831961] [2021-11-23 02:47:04,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880831961] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:47:04,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [620172496] [2021-11-23 02:47:04,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:47:04,990 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:47:04,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:47:04,991 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:47:04,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-23 02:47:15,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:47:15,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:47:15,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 02:47:15,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:47:28,999 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (= .cse0 |c_ULTIMATE.start_SqrtR_~Input#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 02:47:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-23 02:47:33,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:47:46,880 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2021-11-23 02:47:49,060 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2021-11-23 02:48:03,926 WARN L227 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 26 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:48:09,593 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 28 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:48:12,097 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2021-11-23 02:48:14,652 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2021-11-23 02:48:15,751 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-23 02:48:15,752 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-23 02:48:15,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556315076] [2021-11-23 02:48:15,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:48:15,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:48:15,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:48:15,758 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:48:15,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-23 02:48:15,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cc81866-8279-4383-add5-1cf6640b48eb/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process